Folding and adjustable miter-box.



No. 654,449. Patented July 24, I900.

G. GRUNWALD.

FOLDING AND ADJUSTABLE MITER BOX.

(Application filed May 2, 1900.) (No Model.)

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No. 654,449. 7 Patented July 24, I900. G. GRUNWALD.

FOLDING AND ADJUSTABLE MITER BOX.

(Application filed May 2. 1900.)

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(No Mode'l.)

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No. 654,449. Patented July 24,1900.

G. GBUNWALD. FOLDING AND ADJUSTABLE MITER BOX.

(Application filed m 2, 1900.

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Tiaras FOLDING A ND ADJUSTABLE MlTER-BOX.

SPECIFICATION forming part of Letters Patent No. 654,449, dated July 24,1 900.

Application filedMay 2,1900. Serial No. 15,284. (No model.)

To all whom it may concern.-

Be it known that I, GUsrAvE GRUNW'ALD, a citizen of the United States,residing at Philadelphia, county of Philadelphia, and

.State of Pennsylvania, have invented a certain new and usefulImprovement in Folding and Adjustable Miter-Boxes, of which thefollowing is a specification.

My invention relates to a new and useful improvement in folding andadjustable miterboxes, and has for its object to provide an eX ceedinglysimple and effective arrangement of this description which when not inuse may be folded into an exceedingly-small compass for storing ortransportation and when adjusted for use may be adapted for cutting uponvarious angles and for the accurate guiding of the saw-blades.

With these ends in View this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims. I

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in which- Figure1 is a perspective of my improvement adjusted for use, showing theguidepost set to cut a square end; Fig. 2, a similar view of the box inits folded position; Fig. 3, a plan view, portions thereof beingsectioned to fully illustrate the device. Fig. 4 is a longitudinalsection upon the line 00 w of Fig. 3, showing the main guide-post andwings in elevation Fig. 5,a cross-section taken through the center ofthe miter-box and through the slot of the main guide-post; Fig. 6, asimilar view at the line y y of Fig. 3, and Fig. 7 a cross-section ofthe box when folded.

In carrying out. my invention as here embodied A and B represent the twobase-sections of the box, which are hinged together at O, as clearlyshown in Fig. 7. These sections are preferably made of metal and havesecured thereon the wooden blocks D and E by means of suitable screws F,and it is to be noted that these blocks do not-extend over the entireupper surface of the sections, but

that portion of the surface of these sections over which the saw acts iscovered by the blocks G and II, each of which is beveled at I to fit theundercut formed upon theedges of the blocks D and E, so as to hold themin place, and these blocks G and H are finally secured in place by thescrews J, which latter pass through the inner ribs of the base-sectionsand into the inneredges of these lastnamed blocks. The object of this isto permit the ready removal of these inner blocks when they have becomeworn by use without disturbing the main blocks D and E.

K and L represent'the backs of the sections A and B and are hingedthereto by the threaded bolts M, which have the thumb-nuts 0 runthereon, these threaded bolts being pivoted at P to the base-sections,as clearly shown in Fig. 6. ment is that the backs may be swung inwardupon the base-sections, as clearly shown in Figs. 2 and 7, or may beentirely removed therefrom by first removing the thumb-nuts, as will bereadily understood. The back K has a bracket Q formed therewith, withthe hole R therein for the reception of the lower end of the guide-postS, while both. of the backs K and L have thebrackets Q, formedtherewith, the inner edges of which are curved, as indicated at Q, so asto fit within the groove T, formed in the upper portion of thisguide-post. Thus when the backs are secured at right angles to thebase-sections by the proper manipulation of the thumb-nuts theguide-post S will be firmly held in an upright position, while at thesame time being permitted to swing upon its axis for the purposehereinafter set forth.

Guide-wings U are formed with the upper portion of the post S, so as togive a sufficient bearing to the saw-blade to guide it for ordinarypurposes, a slot U being formed both in these wings and in the post topermit the running of the saw therein when in operation. In order thatthis post may be locked in any adjustment, so as to serve as a rigidguide for the saw, a series of holes V are formed within the groove Tand adapted to receive the nose of the spring-actuated bolt WV, thelatter having a knob W, which projects through the wing Q forits steadymanipulation.

In cases where heavy work is to be cut it is The result of thisarrangedesirable to have a secondary guide in order that the blade ofthe saw may not be deflected in its operations, and I therefore haveprovided the secondary post X, having the slot X therein for theguidance of the saw, and this post is swiveled in the sliding block Y,said block being fitted in a dovetailed groove Z, formed in the frontedge of the base-sections, thereby givinga range of movement equal tothe greatest angle at which the cut is to be made. This secondary postis connected with the main guide-post S by the rod a, which is securedin the lower end of the post S and passes freely through a hole in thelower end of the secondary post X, which arrangement will cause the slotX in the last-named post to always aline with the slot Uin the main postat whatever angle the block Y may be set, and this block will also bythis arrangement be held in its adjustment when the post S is looked, asbefore set forth.

From the foregoing description it follows that when my improvedmiter-box is adjusted for use by the base-sections thereof being turnedto the position shown in Fig. 1 and locked in this position by the bolt12 any angle of out may be made from a right angle to forty-five degreesin either direction by simply adjusting the guide -posts and lockingthem in their adjustment by the spring-actuated bolt W, and should thesections G and H become worn or mutilated by use they may be readilyremoved and others substituted therefor by the removal of the screws'J.When the box is out of use, it maybe folded for storing or transportingby first backing off the thumb-nuts O, removing the posts S and X,folding the backs down upon the base-sections, and then placing all ofthe smaller parts, such as the posts,within these sections, and foldingthem together, so as to produce the result shown in Figs. 2 and 7. Whenthis has been accomplished, the box may be easily stored or transported,as it then occupies less than half the space it originally occupied, and

the parts thereof are not likely to be injured by rough usage.

Of course I do not wish to be limited to the exact details ofconstruction here shown, as these may be varied to a certain extentwithout departing from the spirit of my invention, the gist of whichrests in the broad idea of providing a folding miter-box which may becollapsed into a small compass and used as a receptacle for the smallparts.

Having thus fully described my invention, what I claim as new and usefulis 1. A miter-box consisting of two base-sections hinged together so asto be folded upon each other, two back sections hinged to thebase-sections, a main guide-post journaled in the backs, means forlocking said post in va rious adjustments, a secondary guide-post, a

sliding block in which the last-named post is swiveled, and means forconnecting the main,

and secondary posts so as cause them to turn in unison, as specified.

2. A miter-box consisting of two base-sections hinged together so as tobe folded against each other, blocks D and E secured upon said sections,blocks G and H also secured upon 'the sections and adapted to be readilyremoved therefrom, backs hinged to the basesections, a main guide-postjournaled in the backs, guide-wings formed with the post, aspring-actuated bolt for locking the post in various adjustments, ablock fitted to slide upon the front edges of the base-sections, asecondary guide-post swiveled within said block, and a rod secured tothe lower end of the main post and freely sliding in the lower end ofthe secondary post, substantially as and for the purpose set forth.

In testimony whereof I have hereunto affixed my signature in thepresence of two subscribing witnesses.

GUSTAVE GRUNWALD.

Witnesses:

W. J. ROCKWELL, JAS. E. DWYER.

